Welding-roll



v(No Model.)

R. CARTWRIGH-T. WELDING ROLL No. 400,828. 8888815888188.y.2. 1888.

rrrcn.

ROBERT CARTVVRIGIIT, OF ROOHESTER,ASSIGNOR OF ONE-HALF TO VILLIAM A. SVEET, OF SYRAOUSE, NEWT YORK.

WELDING-ROLL.

SPECIFICATION forming part of Letters Patent No. 400,828, dated April 2, 1889. Application filed July 28, 1838. Serial No. 281,318. (No model.)

T0 @ZZ whom, t may concern:

Be it known that I, ROBERT CARTWRIGHT, of Rochester, county of Monroe, in the State of New York, a citizen of the United States, have invented certain new and useful Improvements in VVelding-Rolls, of which the following is a speciiieation, reference being had to the accompanying drawings, in which- Figure l is a vertical sectional elevation. Fig. 2 is a plan view of one side of the welding-roll removed from the carrying-frame, the frame being shown in dotted lines.

This invention relates to the construction of rolls for use in welding-machines,whether the roll have simply a forward movement or whether it be connected to mechanism adapted to impart to it a reciprocating motion.

The object of my invention is to produce a welding roll adjustable to different thicknesses of metal and having only the minimum of friction. l

My invention consists in the several novel features of construction and operation hereinafter described, and which are specifically set forth in the clauses of the claims hereunto annexed. It is constructed as follows:

A represents the part of the frame of the machine, and where a reciprocatory motion is imparted to the welding-roll this frame is stationary, or it may be stationary also when the work is fed through under the roll without any reciprocation of either the work or the roll.

B B are the side arms of the frame in which the welding-roll is journaled, and when desired a reciprocatory motion may be imparted to this frame in any ordinary manner.

C is the main arbor, which is loose in its bearings in the frame B. Upon this arbor, and upon either side of the main arbor O, I mount the supporting-rollers D upon frictionbearings, each upon its own independent rollers, and the welding-roll E is in like manner mounted upon friction-rollers 2 independent of the friction-rollers l l, so that the supporting rollers and the welding roll are all mounted upon independent friction -roller bearings, and all of these friction-bearings are mounted upon and inclose the main arbor O,\and all operate upon the periphery of the main arbor entirely independent 0f each other, and also by their friction upon the main arbor they cause that to rotate more or less, the result being that when in operation each and every friction-roll is constantly wearing against a different part of the main arbor, so that the main arbor is never worn out of true.

At 3 3 I show a trackway upon which the supporting-rollers D travel. This trackway 6o is adjustable by means of the slotway 4L, (shown in dotted lines,) and through which the bolts 5 are inserted into the frame A, and by adjusting' this slightly vertically I adapt the rolls to be used upon thick or thin work, especially when welding the joint of a pipe, where I use one welding-roll inside and one outside of the pipe, one being vertically above the other.

To prevent the track from slipping back, I 7o insertthick or thinner shims into the space 6 between the track and frame A. This trackway may be of any length desired, or sulficient to permit the proper reeiprocation of the roll.

It will be observed that all of the strain of the welding-pressure on the roll Eis transmitted to the arbor C, and thence tothe supporting-rolls D and trackway e, and that the reciproeatory movement of the `welding-roll 8o does not abrade the metal at the weld, but that, on the other hand, the operation of the rolls is to knead the heated metal at the Weld, thereby preserving the fiber intact and kneading it together, and consequently making the iron at the weld substantially homogeneous.

Vhat I claim as my invention, and desire to secure by Letters Patent, is-

l. The welding-roll consisting of a weld- 9o ing-roller and independent supporting-rolls, all mounted upon independent friction-roll bearings, which are themselves mounted upon one arbor, in combination with a traclnvay for the supporting-rolls.

2. A welding-roll consisting of a weldingroller, independent supporting rollers, all mounted upon friction-bearings bearing upon an arbor loose in its bearings, and a trackway mounted adj ustably upon the main .frame I oo of the machine and carrying the supportingrollers.

In witness whereof I have hereunto set my hand this lst day of May, 1888.

ROBT. OARTWRIGHT. In presence ef- H. P. DENrsoN, C. W. SMITH. 

